Burnishing-machine



E. S. RAUWORTH. BURNISHING MACHINE.

APPLICATION FILED MAY 5, 1959. 1,368,752;

2 SHEETSSHEET I.

"" E l -I- INVENTOR. WITNESSES v ATTORNEYS.

Patented Feb. 15, 1921.-

E. s. RAUWORTH.

BURNISHING MACHINE. In, APPLICATION FILED MAY 5. I919. 1 6,?52, Patented Feb. 15, 11921 2 SHEETSSHEET 2. m? m INVENTOR. WITNESSES:

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, easy: to operate.

ETED dTATES PATENT 65 F565.

EDWIN S. RAUWORTH, F SOCVIH- HAVEN, MICHIGAN.

j BURN'Ism G-MAGHINE.

To all whom it may concern 7 Be it known that I, EDWIN S. RAUWORTH, a citizen of the United States, residing at South Haven, county of Van Buren, State of Michigan, have invented certain new and useful Improvements in Burnishing-Machines, of which the following is. a specific-a tion. 1

This invention relates to improvements in burnishing machines. I a

The main objects of this invention'are: First, to provide an improved burnishing or polishing machine especially desirable for the polishing of flat surfaces such as.

panels for cabinets, pianos, phonograph.

machine having these advantages which is economical and durable in structure and Further objects, and objects relating to structural details, will definitely appear from the detailed description to follow.

. I accomplish the, "objectsofmyinvention by the devices and means-described in the following specification.

clearly" defined andapointed out. in the claims.

A structure which is apreferred', embodiment of my invention isclearly illustrated in the accompanying drawing, forming a part ofthis specification, in: which:

Figure I is a sideelevation of a structure embodying the features of m-y'invention, a portion of the pressure cylinder being broken away and a part of the air feed hose or pipe for the burnishing'machine motor being also broken away.

Fig. IIis a side elevation of an embodiment of my invention in which the lateral adjustment for the pressure thrust member is omitted, portions of the cylinder and air Fig. III is a de'tail'side elevation of an embodiment of my invention, in which the burnishing .machine is; lifted by power means. Y

i cylinder 11. V

with a ball and joint member 12 coacting The invention is.

Specification of LettersPatent. Patented Feb 15, 1921. Application. filed May 5,-1919. Serial No. 294,653.

Fig. IV is an enlarged detail section on a l ne corresponding to line 44 of Fig. I.

' In the drawing similar reference characters refer to similar parts throughout the several views, and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

Referring to the drawing, 1 represents the ceiling of a room and 2 the bed of a polishing bench or table.-

The burnishing machine proper- 3 is shown more or less conventionally, the machine illustrated being pneumatically driven and provided with polishing shoes 4 which are reciprocated by the mechanism. The de- 7 tails .of the polishing-or burnishing machine proper arenot illustrated or described as they form no part of my present invention. The polishing machine 3 is provided with an upwardly projecting centrally disposed air'inlet 5 to which the flexible air supply pipe 6 is connected. This supply pipe. 6 is connected to the main 7 and controlled by a valve shown. conventionally at 8. At its front end the inlet. 5' is provided with a socket joint member 9-.

To apply pressure to the bur'nishing machine 3 and hold it to the work I provide a pressure means comprisinga phmger l0 and The plunger 10. is provided withthe sockot-memheri).

I The cylinder is provided with a supporting rod 13 having a ball joint member 14 at its upper end disposed in a, socketv 15 of a thrust member 16. This thrust member is provided witha collar 1'? slidably em- .bracing the horizontal rod 18 of the, ceiling bracket 19'. j

The cylinder 11 is connected to the: air main? by means of the hose 20, a valve 21 beingprovided to, control the delivery of air to the cylinder.

The rod 18' has a series of notches 22,

while the thrust member 16 has. a detent 23 adapted to coact with these notches so that the thrust membermay be adjusted along the line of the rod 18, but when pressure is applied the detent 23 is engaged with one. of the notches 22 holding the thrust member against longitudinal movement on the rod.

In operation the work is laid upon the table 2, the air turned on to the burnishing machine byth'e valve 8 and to the cylinder 11 by the valve 21. The pressure of air is I capacity.

7 beyond the stroke of theplunger. The valve regulated in the main so that the desired pressure is exerted upon the work and all the operator is required to-do is to push or move the burnisher about upon the surface to be polished.

A substantially uniform pressure is maintained upon the polishing machine with no eifort on the part of the operator, allthe operator is required to do being to move'the machine about onthe surface to be polished. This may be done with little effort so that boys or women may perform work which could only be otherwise performed at great effort and hy persons of considerable strength. It is possible to securea uniform polish with very little skillon the part of the operator and the machine is of very large In the modification shown in Fig. II the thrust member 2lis mounted directly upon the ceiling, that is, the lateral adjustment feature is eliminated.

In the modification shown in Fig. III the supplypipe 20 is connected to a feed pipe 26 opening into the cylinder at each end 2T controlsthe delivery of the air so that the air may be employed to lift the polishing' machine when des1red.- r

V I haveillustrated and'described nay-improvements in v embodiments which -I have found very satisfactory and practical in use.

I have not attempted toillustrate or describe certain modifications and adaptations which I contemplate and'which might be desirable for adaptation to particular uses as I believe the disclosuremade will enable those skilled in the'art to which my inyen .ters .Pa-tent,is:

tionrelate's to embody or adapt the same as particular circumstances may render desirable. 1

I-Iaving thus described myinvention, what I claim'asnew and desire to secure by Let- 1. In a 'machine of the "class described,- the combination of a pneumatically driven burnisher provided with an upwardly projeeting centrally disposed air inlet having a socket joint membe'r at its upper end,'a flexible air feed pipe connected to said inlet,'a plunger having a ball jointmcmber coacting with said socket jointmember, a coacting cylinder, asupporting rod therefor provided. with a ball joint member, a coacting'socket joint member adapted to sustain the thrustof saidcylinder, an air-feed pipe connected to the ends of said cylinder beyond the stroke of the plunger, a flexible air supply pipe connected, to said-cylinder feed pipe, and a valve insaid cylinder feed pipe controllingthe delivery of air to the.

ends of the cylinder. V

2. In a machine of the class described,

the combination of a pneumatically {driven burnisher provided with an upwardly centrally disposed air inlet having a socket said socket jointmember, a coacting cylinder, a supporting rod therefor provided with a ball joint member, a coacting-socket joint member adapted to sustain the thrustof said cylinder, and a flexible air supply ipipe connection forsaid cylinder. 3.. In a machine of the class described, thecombination of a pneumatically driven 'burnisher, a flexible air feed pipe for said burnish er, afplunger having a universal joint connection to said burnisher, a coacting cylinder, a supporting rod "therefor, a thrust sustaining member to which said supporting rod is connected by aluniversaljoint connection, an air feed pipe connected tothe ends of said cylinder beyond. the stroke of theplunger, a flexible air supply pipe connected to said cylinder feed pipe, and a valve, in said cylinder feed pipe controlling the delivery of air to the ends of the cyh inder. I f

4. In. a machine of thefclassldescribed', the combination of a pneumatically driven burnisher, a flexible air feed pipe-for said burnisher, plunger having a universal joint connection to said burnisher, a coaeting cylinder, a 'supportingi'rod therefor, a thrust sustaining member to which said sup-, portingrod is connected by a universal joint connection, a flexible, air supply pipe con nected to the ends of the cylinder, and a valve oontrollingthedelivery of air to the endsof the cylinder, for the purpose specitied.

. 5. Ina striicture of the classddescribed,

the combinationof a pneumatically driven burnisher, a fiexibleair feedpipe therefor, a plunger centrally connected tosaid burnisher by a:unlversal joint1connection, a co acting air cylinder, a flexible airsupplycon nectionto said cylinder, a supporting bracket comprising a horizontal rodnotched on its under side,and a thrust member having a collar slidably embracing said rod and a detent adaptedto coact with said notches,

said cylinder havinga universal joint connection with said thrust member.

6. In a structure of ;the class described,

the combination of a pneumatically driven burnisher, a flexible air feed; pipe therefor,

centrally connected to said burnisher' by a.

universal joint; connection,;" a; coactin'g cyllnder, a

pressure fluid connection to said cylinder, a supporting bracket comprising a horizontal rod notched on its under side, and a thrust member having a collar slidably embracing said rod and a detent adapt ed to coact with said notches, said cylinder having a universal joint connection with said thrust member.

8. Ina structure of the class described, the combination of a burnisher, a plunger centrally connected to said burnisher by a universal joint connection, a coacting cylinder, a pressure fluid connection to the ends of said cylinder, a valve controlling the delivery of pressure fluid to the ends of cylinder, and a thrust member, said cylinder having a universal joint connection with said thrust member.

9. In a structure of the class described, the combination of a burnisher, a thrust sustaining member, a pressure means for said burnisher comprising a plunger and cylinder, one member of said pressure means being connected to said burnisher by a universal joint, the other being connected to said thrust member by a universal joint, a pressure fluid connection to the ends of said pressure cylinder, and means for controlling the fluid for applying the pressure or ralsing the burnisher.

10. In a machine for the purpose indicated, in combination with a support for the work, an overhead resistance member, a carrier for a rubbing device, an extensible arm having universal joint connections at one end with the resistance member and at the other end with said carrier, said extensible arm comprising an expansible and reducible chamber by Whose expansion and reducchamber comprising two members cooperat-.

ing cylinder-and-piston-wise, the flexible fluid pressure conduit having connections to the cylinder member at opposite sides of the piston member therein, and a valve direct ing the pressure fluid to one side or the other of the piston according to adjustment.

12. In the construction defined in claim 10 foregoing, the combination with the pressure fluid conduit of a pressure regulating means, and means operable at will to vary the pressure admitted to the expansible and reducible chamber.

In Witness whereof, I have hereunto set my hand and seal in the presence of two witnesses.

EDWIN s. RAUWORTH. 1 3.

Vitnesses JAMES L. BARRON, R. G. Boron. 

